import React, {Fragment, useEffect, useState} from 'react';import GoogleMapReact from 'google-map-react';const Map = () => {  const [center, setCenter] = useState();  useEffect(() => {    window.navigator.geolocation.getCurrentPosition(position => {      setCenter({        lat: position.coords.latitude,        lng: position.coords.longitude      });    });  }, []);  return <Fragment>    <GoogleMapReact      bootstrapURLKeys={{ key: 'my_api_key' }}      center={center}      yesIWantToUseGoogleMapApiInternals    />  <button    onClick={() => window.navigator.geolocation.getCurrentPosition(position => {      setCenter({        lat: position.coords.latitude,        lng: position.coords.longitude      });    })}  >    Locate Me  </button>  </Fragment>;};